they do it without ill intent, but its still not good. they both lie thinking its good but its NOT. neither is papyrus, in fact papyrus has one large flaw. Sans isnt a perfect brother and i hope people learn this. sans (undyne is also guilty of this) tries to hide everything from papyrus and lies to him constantly.
Papyrus IS socially inept, but its not his fault. around 5 hours later like three different people are trying to tell me papyrus is some dumb little baby. i also said papyrus was much smarter than he let on. i proceeded to say papyrus ISNT innocent or naive or anything, but super optimistic. In a youtube discussion i am still in, someone claimed that papyrus was “an innocent cinnamon roll who doesnt understand why undyne is sad”. apologizing in advance for crap english (its not my first language)